Methods, systems, and devices for wireless communications are described that support group-based acknowledgment feedback techniques. Two or more different groups of downlink transmissions may each have an associated group-based acknowledgment feedback, and a base station may transmit downlink control information to a UE that indicates one or more parameters that are used to determine which downlink transmissions are to be reported in the group-based feedback. Based on the parameters in the downlink control information, the UE may determine the feedback to be reported, and a timing for when to transmit the feedback to the base station.
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3. The method of claim 1, wherein none of the first set of group-based acknowledgment feedback parameters or the second set of group-based acknowledgment feedback parameters include an explicit indication that requests feedback of another group of downlink transmissions.
6. The method of claim 5, wherein a latest received request field value is used to determine whether the first uplink transmission includes both the first group-based acknowledgment feedback and the second group-based acknowledgment feedback.
7. The method of claim 5, wherein the UE is not expected to receive different downlink control information transmissions that schedule downlink transmissions of different downlink transmission groups and point to a same transmission time for the first group-based acknowledgment feedback and the second group-based acknowledgment feedback.
8. The method of claim 5, wherein when an initial received request field value indicates that the first uplink transmission is to include both the first group-based acknowledgment feedback and the second group-based acknowledgment feedback, and a subsequent received request field value indicates that only one of the first group-based acknowledgment feedback or the second group-based acknowledgment feedback is to be provided with the first uplink transmission, the UE discontinues group-based acknowledgment feedback determination for the first uplink transmission.
9. The method of claim 5, wherein the UE transmits the first group-based acknowledgment feedback and the second group-based acknowledgment feedback when at least one of the first set of group-based acknowledgment feedback parameters or the second set of group-based acknowledgment feedback parameters indicates the request for both the first group of downlink transmissions and the second group of downlink transmissions.
15. The apparatus of claim 13, wherein none of the first set of group-based acknowledgment feedback parameters or the second set of group-based acknowledgment feedback parameters include an explicit indication that requests feedback of another group of downlink transmissions.
18. The apparatus of claim 17, wherein a latest received request field value is used to determine whether the first uplink transmission includes both the first group-based acknowledgment feedback and the second group-based acknowledgment feedback.
19. The apparatus of claim 17, wherein the UE is not expected to receive different downlink control information transmissions that schedule downlink transmissions of different downlink transmission groups and point to a same transmission time for the first group-based acknowledgment feedback and the second group-based acknowledgment feedback.
20. The apparatus of claim 17, wherein when an initial received request field value indicates that the first uplink transmission is to include both the first group-based acknowledgment feedback and the second group-based acknowledgment feedback, and a subsequent received request field value indicates that only one of the first group-based acknowledgment feedback or the second group-based acknowledgment feedback is to be provided with the first uplink transmission, the UE discontinues group-based acknowledgment feedback determination for the first uplink transmission.
21. The apparatus of claim 17, wherein the UE transmits the first group-based acknowledgment feedback and the second group-based acknowledgment feedback when at least one of the first set of group-based acknowledgment feedback parameters or the second set of group-based acknowledgment feedback parameters indicates a request for both the first group of downlink transmissions and the second group of downlink transmissions.
27. The apparatus of claim 25, wherein none of the first set of group-based acknowledgment feedback parameters or the second set of group-based acknowledgment feedback parameters include an explicit indication that requests feedback of another group of downlink transmissions.
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July 21, 2021
November 5, 2024
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